uCHANNEL SELECTOR [DIAL•ENTER]

Rotate to select the operating channels, Set mode set- tings, etc. (pgs. 6–8, 55)

While pushing and holding [H/L], rotate to adjust the brightness of the LCD and key backlight. (p. 10)

Push to enter the input channel comment, selected item, etc. (pgs. 10, 55)

Rotate to check TAG channels, changes scanning di- rection or resumes the scan manually during scan.

(p. 13)

While pushing and holding [HAIL•RX ], rotate to ad- just the audio level in RX Speaker mode. (p. 51)

Push and hold for 1 sec. to display the GPS information when a GPS receiver is connected. (p. 22)

iCHANNEL/WEATHER CHANNEL KEY [CH/WX•DUAL•U/I/C]

Selects and toggles the regular channel and Weather channel when pushed momentarily. (p. 7)

Push and hold for 1 sec. to start Dualwatch or Tri-watch. (p. 14)

Push to stop Dualwatch or Tri-watch when either is acti- vated. (p. 14)

Move the cursor backward while in the channel com- ment programming condition. (p. 10)

While pushing and holding [H/L], push to select one of three channel groups in sequence. (p. 7)

• U.S.A., International and Canadian channels are available.

PANEL DESCRIPTION 2

o SQUELCH CONTROL [SQL]

2

Rotate to set the squelch threshold level. (p. 8)

!0SCAN/TAG KEY [SCAN•TAG] (p. 13)

Push to start and stop Normal or Priority scan.

Push and hold for 1 sec. to set or clear the displayed channel as a TAG (scanned) channel.

While pushing and holding [H/L], push for 3 sec. to clear or set all TAG channels in the selected channel group.

!1VOLUME CONTROL [VOL] (p. 8) Rotate to adjust the audio level.

!2TRANSMIT POWER KEY [H/L]

Push to toggle the power high or low. (p. 8)

• Some channels are set to low power only.

While pushing this key, some keys perform secondary functions.

!3POWER KEY [POWER] (p. 8)

Push to turn power ON.

Push and hold for 1 sec. to turn power OFF.

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Icom IC-M504 instruction manual 2TRANSMIT Power KEY H/L